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Internal Medicine

Nnaemeka A. Onyekaba, MD

Works at hospitals in Plano, TX · Richardson, TX · Texas

Summary

Dr. Nnaemeka A. Onyekaba, MD is an internal medicine doctor at 6537 Preston Rd, Plano, TX 75024. Phone: (972) 867-9131. Accepts Medicare assignment. In 2024, Nnaemeka A. Onyekaba had 327 Original Medicare patients and 1,679 services. NPI 1093191447. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Nnaemeka A. Onyekaba, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Nnaemeka A. Onyekaba accept Medicare assignment?
Yes. Medicare's clinician data says Nnaemeka A. Onyekaba accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Nnaemeka A. Onyekaba see?
In 2024, CMS data shows 327 Original Medicare patients and 1,679 services for Nnaemeka A. Onyekaba. This counts Original Medicare only and measures volume, not quality.
What is Nnaemeka A. Onyekaba's NPI number?
1093191447. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Nnaemeka A. Onyekaba, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients327
Services billed to Medicare1,679
Different services or procedures11
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)912 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)315 services
  3. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)199 services
  4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)96 services
  5. Critical care, first 30-74 minutes (99291)66 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis63%
  • Chronic kidney disease61%
  • Diabetes60%
  • Heart failure55%

Hospitals where Nnaemeka A. Onyekaba works

Medicare's Facility Affiliation Data lists Nnaemeka A. Onyekaba at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Nnaemeka A. Onyekaba is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Nnaemeka A. Onyekaba as a member of this group (CMS data updated October 2, 2026).

  • Infectious Disease Doctors, PA17 clinicians in the group

Specialties

Find other Internal Medicine doctors in Texas →

Other internal medicine doctors in Plano

Clinicians with the same Medicare primary specialty in Plano, TX — not a recommendation.

All internal medicine doctors in Plano →

Other clinicians in Infectious Disease Doctors, PA

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2011 (15 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1093191447
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians